The Sails /Rig

Sloops are single-masted sailboats. If they have just two sails - a foresail and a headsail - then they’re a Bermudan sloop, the purest type of sailboat.

Cutter sailboats has an additional sail (the staysail) set on its own stay between the foresail and the headsail.

Cat -A catboat (alternate spelling: cat boat), or a cat-rigged sailboat, is a sailing vessel characterized by a single mast carried well forward (typically near its bow). Generally a catboat has a light and shallow draft hull, wide beam approximately half its length, is gaff riged, and carries a centreboard. (by Wiki)

Schooner is a two-or-more masted sailboat, in which the aft-most mast - the mainmast - is the same height or taller than the foremast.

cutter-rig sailboat has an additional sail (the staysail) set on its
own stay between the foresail and the headsail. - See more at:
http://www.sailboat-cruising.com/types-of-sailboats.html#sthash.fzYQ0l5W.dpuf

Second Life Ships (SLS) is not part of the official Secondlife TM by Linden Lab.
SLS ist a private Fun-Project by the Avatar Atlan Bade without any commercial background.
SLS ist not complete and If you find wrong information about the ships (f.e. Typ, Sails, Buildtyp,...), please send a notecard inworld to Atlan Bade or an eMail to atlan.bade@yahoo.de